Download - Otogenic brain abscess.pptx
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OTOGENIC BRAIN ABSCESS
Benisha Julian
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Route of Spread
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Tegmen plateTemporal bone
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Cerebellum
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Superior P
etrosal Sinus
Sigmoid Sinus
Posterior Semicircular Canal
Trautmann’s Triangle
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Retrograde Thrombophlebitis
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Bacteriology• Staph. aureus & albus• Strep. pyogenes• Pneumoccus• E. coli• B. proteus
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1 2
3 4
Stages
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Initial Encephalitis Stage
1
Headache
Chills
Nausea and vomitting
Clinical features of
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Latent Stage
2
Localization of abscess1- 2
weeks
Headache
Raised temperature
Clinical features of
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Expanding Abscess Stage3
Expansion of abscess
Raised Intracranial
tension
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Clinical features of Intracranial Tension
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Headache
Pulse rate & Irregular breathing
Projectile Vomiting
Raised temperature
Papilledema
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Terminal Stage
4
Rupture of AbscessInto ventricle
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Temporal Lobe AbscessClinical features of
Aphasia
Oculomotor palsy
Hemiplegia
Homonymous Hemianopia
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Clinical features ofCerebellar Abscess
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Ataxia
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Nystagmus
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Dysdiadochokinesia
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Past pointing
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Investigations• CT - diagnostic• Lumbar Puncture• Electroencephalography• Intra-cranial angiography
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Temporal lobe
Abscess
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Cerebellar Abscess
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Treatment•Antibiotics
• Abscess Drainage
•Mastoidectomy – removal of primary focus
of infection
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